I just did my valve cover trying to track down a leak which in turn smokes. In the process, I covered everything in oil. Absolutely drenched. How long would that take to burn off? I've since driven the car for about an hour or so, still pluming smoke. And a fresh drop of oil on the ground, but I guess heat could loosen oil up higher and make it drip.

Hoping the leak is gone but to me seems like one trip should burn off the majority....

I guess I'm asking how long that would take to burn off? 2 hours or 2 weeks?

I'm hoping I got the leak, but the fact that I've driven it about 4 times for 20 minutes or so and every times smokes just as bad makes me think I still have a leak. If this keeps up I guess I need to go after the oil return on the turbo next

I would say maybe a day or so if you drive it for a extended amount of time and if you spray it down maybe a day.
Just take her down the HW for a nice ride.
Your best bet would be to spray it down with cleaner then you can start from scratch as far as checking for leaks goes.